In skeletal muscle a summated contraction, resulting from two action potentials, produces greater force than a single twitch contraction

Question

Accepted Answer

because when there is a second action potential shortly after the first one, calcium stays in the cytoplasm for longer and the crossbridges have more time to exert their full force.

Answer

only if the second action potential occurs after the contraction of the muscle in response to the first action potential has fully relaxed.

Answer

because the second action potential stimulates more muscle fibres to contract.

Answer

because the second action potential causes more ATP to be made available to provide more energy for the contraction.

Answer

only if the second action potential is bigger than the first action potential.

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In skeletal muscle a summated contraction, resulting from two action potentials,...

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